Majors will be part of the United State's 4x400-meter relay team. The preliminary heats take place Saturday and the finals will be Sunday.

"It's an excellent opportunity for her to get experience on the world stage, competing against the best under-20-year-olds," Tennessee sprints coach Tim Hall said. "It's good for her to face this kind of competition as she prepares for NCAAs."

The sprinter from Lorton, Va., qualified to be part of the U.S. squad thanks to a fourth-place finish in the 400 meters (53.42 seconds) at the USATF Junior Championships earlier this summer.

Majors is scheduled to run the anchor leg of the relay.

"When you have that pressure, you have the opportunity to respond," Hall said. "I think she is going to have a great race. In the moment, she'll be ready."